Self-piercing clinch washer



FIG. 1 is a perspective view of a self-piercing clinch washer showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view. 

CLAIM The ornamental design for a self-piercing clinch washer, as shown and described. 